Parametric Ambisonic Encoding using a Microphone Array with a One-plus-Three Configuration

McCormack L, Gonzalez R, Fernandez J, Hold C, Politis A. Parametric Ambisonic Encoding using a Microphone Array with a One-plus-Three Configuration. In: AES Conference: AES 2022 International Audio for Virtual and Augmented Reality Conference. Audio Engineering Society; 2022. Paper 16. Available from: https://aes.org/publications/elibrary-page/?id=21846

@inproceedings{McCormack2022_21846,
  author = {McCormack, Leo and Gonzalez, Raimundo and Fernandez, Janani and Hold, Christoph and Politis, Archontis},
  title = {{Parametric Ambisonic Encoding using a Microphone Array with a One-plus-Three Configuration}},
  booktitle = {AES Conference: AES 2022 International Audio for Virtual and Augmented Reality Conference},
  note = {Paper 16},
  year = {2022},
  month = aug,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=21846}
}

TY  - CPAPER
TI  - Parametric Ambisonic Encoding using a Microphone Array with a One-plus-Three Configuration
AU  - McCormack, Leo
AU  - Gonzalez, Raimundo
AU  - Fernandez, Janani
AU  - Hold, Christoph
AU  - Politis, Archontis
T2  - AES Conference: AES 2022 International Audio for Virtual and Augmented Reality Conference
M1  - Paper 16
PY  - 2022
DA  - 2022/08/06
UR  - https://aes.org/publications/elibrary-page/?id=21846
PB  - Audio Engineering Society
LA  - en
AB  - A parametric signal-dependent method is proposed for the task of encoding a studio omnidirectional microphone signal into the Ambisonics format. This is realised by affixing three additional sensors to the surface of the cylindrical microphone casing; representing a practical solution for imparting spatial audio recording capabilities onto an otherwise non-spatial audio compliant microphone. The one-plus-three configuration and parametric encoding method were evaluated through formal listening tests using simulated sound scenes and array recordings, given a binaural decoding workflow. The results indicate that, when compared to employing first-order signals obtained linearly using an open tetrahedral array, or third-order signals derived from a 19-sensor spherical array, the proposed system is able to produce perceptually closer renderings to those obtained using ideal third-order signals.
ER  -